Automobile steering worm

Abstract

The utility model discloses an automobile steering worm, which belongs to the technical field of worms, and comprises a first worm, a second worm, a worm gear and a hollow structure, the right side of the first worm is fixedly connected with the worm gear, the inner side of the worm gear is provided with the hollow structure, and the right side of the worm gear is fixedly connected with the hollow structure. The first worm, the second worm, the worm gear and the hollowed-out structure are used in cooperation, the hollowed-out structure is communicated with a hydraulic system and can serve as an oil flowing channel, heat generated in the steering process is helped to be transmitted, the oil temperature is reduced, power assisting failure caused by overheat of hydraulic oil is avoided, meanwhile, the material consumption can be reduced through the structural design of the hollowed-out structure, and the cost is reduced. And the overall weight of the steering system is reduced, so that the control response speed and the suspension comfort of the vehicle are improved, and particularly, the effect is more obvious in high-speed running or curves.

Description

Technical Field

[0001] This utility model relates to the field of worm gear technology, specifically to an automotive steering worm gear. Background Technology

[0002] In automotive steering systems, a worm gear typically refers to a helical gear used in conjunction with a worm wheel. Together, they form a worm-wheel transmission mechanism. This mechanism converts input rotational motion into output rotational motion, simultaneously achieving deceleration and torque increase. Worm-wheel transmission mechanisms have different applications in different types of steering systems, including mechanical steering systems, hydraulic power steering systems, and electric power steering systems. With the development of the automotive industry, automotive steering systems are receiving increasing attention in terms of safety, comfort, and flexibility. As an important power transmission and steering control element, the worm gear is widely used in automotive steering systems. Scholars and engineers both domestically and internationally have conducted in-depth research and development on worm gears, striving to improve their performance and reliability.

[0003] This application improves upon the existing technology. In the existing technology, when a car steering gear is used for a long time, the pressure at the center of the worm shaft increases, and the worm wheel and worm mesh with each other, resulting in local heat generation and easy adhesion. If driving continues under these conditions, the gear teeth are prone to deformation, affecting the steering feel during driving, and may even cause the car steering to malfunction, leading to an accident.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide an automotive steering worm gear to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automotive steering worm gear, comprising a first worm, a second worm, a worm gear, and a hollow structure, wherein the worm gear is fixedly connected to the right side of the first worm, the hollow structure is provided on the inner side of the worm gear, and the hollow structure is fixedly connected to the right side of the worm gear.

[0007] As a further embodiment of this utility model: a mounting block is fixedly connected to the left side of the first worm gear, a first connecting block is fixedly connected to the left side of the mounting block, and a first circular block is fixedly connected to the left side of the first connecting block.

[0008] As a further embodiment of this utility model: the length of the mounting block is approximately 8mm, the length of the first connecting block is approximately 13mm, and the length of the first circular block is approximately 9mm.

[0009] As a further embodiment of this utility model: a second connecting block is fixedly connected to the right side of the second worm gear, and a second round block is fixedly connected to the right side of the second connecting block.

[0010] As a further embodiment of this utility model: the length of the second connecting block is approximately 5mm, and the length of the second circular block is approximately 8mm.

[0011] This utility model has the following beneficial effects:

[0012] This utility model utilizes a combination of a first worm, a second worm, a worm gear, and a hollow structure. The hollow structure connects to the hydraulic system, serving as a channel for oil flow, helping to dissipate heat generated during steering, reducing oil temperature, and preventing power steering failure due to overheating. Simultaneously, the hollow structure design reduces material usage and the overall weight of the steering system, thereby improving vehicle handling response and suspension comfort, especially noticeable at high speeds or in corners. Furthermore, the hollow structure can be used to house hydraulic lines, electronic wiring harnesses, or sensor circuits within the steering system. It facilitates coaxial connection with components such as the steering shaft and input shaft, achieving a compact mechanical structure design, saving engine compartment space. It also solves the problem that during prolonged use, the pressure at the center of the worm shaft increases, causing the worm wheel and worm to mesh, leading to localized heating and potential seizure. Continued driving under these conditions can deform the gear teeth, affecting steering feel and even causing steering malfunctions and accidents. Attached Figure Description

[0013] Figure 1 This is a partial three-dimensional schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a partial structural diagram of the right side of this utility model;

[0015] Figure 3 This is a schematic diagram of a partial left-side view of the present invention;

[0016] Figure 4 This is a partial structural diagram of the worm gear and the hollow structure that are the main features of this utility model.

[0017] In the diagram: 1. Mounting block; 2. First connecting block; 3. First circular block; 4. First worm gear; 5. Second circular block; 6. Second connecting block; 7. Second worm gear; 8. Worm gear; 9. Hollow structure. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figure 1-4 An embodiment of this utility model is provided: a car steering worm gear, including a first worm (4), a second worm (7), a worm gear (8) and a hollow structure (9). The worm gear (8) is fixedly connected to the right side of the first worm (4), and the hollow structure (9) is provided on the inner side of the worm gear (8). The hollow structure (9) is fixedly connected to the right side of the worm gear (8).

[0024] Specifically, such as Figure 1 and Figure 4As shown, when in use, the hollow structure (9) is connected to the hydraulic system and can serve as a channel for oil flow, helping to transfer the heat generated during steering, reducing the oil temperature, and preventing the hydraulic oil from overheating and causing power steering failure. At the same time, the structural design of the hollow structure (9) can reduce the amount of material used and reduce the overall weight of the steering system, thereby improving the vehicle's handling response speed and suspension comfort, especially at high speeds or in curves. In addition, the structural design of the hollow structure (9) can be used to arrange the hydraulic lines, electronic wiring harnesses, or sensor lines of the steering system. It is easy to connect coaxially with components such as the steering shaft and input shaft, achieving a compact mechanical structure design, saving engine compartment space, and solving the problem that when the car steering gear is used for a long time, the pressure at the center of the worm shaft increases, the worm wheel and worm mesh with each other, causing local heating and easy to produce glue. If driving continues at this time, the gear teeth are easily deformed, affecting the steering feel during driving, and even causing the car steering to malfunction, leading to an accident.

[0025] Among them, through the structural design of the first worm 4 and the second worm 7, a multi-stage transmission chain can be formed. By matching different lead angles and number of teeth, a large transmission ratio output can be achieved. In addition, when the two worms mesh at the same time, the load can be distributed to the two worms, reducing the tooth surface contact stress of a single worm and reducing wear.

[0026] A mounting block (1) is fixedly connected to the left side of the first worm (4), a first connecting block (2) is fixedly connected to the left side of the mounting block (1), a first round block (3) is fixedly connected to the left side of the first connecting block (2), the length of the mounting block (1) is about 8 mm, the length of the first connecting block (2) is about 13 mm, the length of the first round block (3) is about 9 mm, a second connecting block (6) is fixedly connected to the right side of the second worm (7), a second round block (5) is fixedly connected to the right side of the second connecting block (6), the length of the second connecting block (6) is about 5 mm, and the length of the second round block (5) is about 8 mm.

[0027] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, when in use, the mounting block (1) serves as the direct connection component between the worm and the external structure. Axial fixation is achieved through bolt holes or slots to ensure the positional accuracy of the worm in the transmission. The mounting block (1) is connected to the first circular block (3) as a transitional structure for force transmission. It can be used to adjust the axial spacing or integrate other functions. The first circular block (3) is used to install bearings, seals, or connect actuators. The circular cross-section is used to achieve low-friction fit of the rotating pair. The second connecting block (6) is used to dock with the driven part or as an axial limiting device. The second circular block (5) is used to install idler wheel, sensor, or balancer.

[0028] Working principle: In this application, the hollow structure (9) is connected to the hydraulic system and can serve as an oil flow channel to help transfer the heat generated during steering, reduce the oil temperature, and prevent the hydraulic oil from overheating and causing power steering failure. At the same time, the structural design of the hollow structure (9) can reduce the amount of material used and reduce the overall weight of the steering system, thereby improving the vehicle's handling response speed and suspension comfort, especially at high speeds or in curves. In addition, the structural design of the hollow structure (9) can be used to arrange the hydraulic lines, electronic wiring harnesses, or sensor lines of the steering system. It is convenient to connect coaxially with components such as the steering shaft and input shaft, achieving a compact mechanical structure design and saving engine compartment space.

[0029] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. At the same time, the electrical components mentioned in this application are all connected to an external power supply and control switch when in use. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Therefore, this utility model will not explain the control method and circuit connection in detail. Moreover, the external controller mentioned in the specification can play a control role for the electrical components mentioned in this article, and the external controller is a conventional known device.

[0030] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above are only preferred embodiments of this utility model. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this utility model, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A steering worm gear for automobiles, comprising a first worm (4), a second worm (7), a worm gear (8), and a hollow structure (9), characterized in that: The right side of the first worm (4) is fixedly connected to a worm gear (8), and the inner side of the worm gear (8) is provided with a hollow structure (9). The right side of the worm gear (8) is fixedly connected to the hollow structure (9).

2. The automotive steering worm gear according to claim 1, characterized in that: The first worm (4) is fixedly connected to the left side of the mounting block (1), the mounting block (1) is fixedly connected to the left side of the first connecting block (1), and the first connecting block (2) is fixedly connected to the left side of the first connecting block (2).

3. The automotive steering worm gear according to claim 2, characterized in that: The length of the mounting block (1) is approximately 8 mm, the length of the first connecting block (2) is approximately 13 mm, and the length of the first round block (3) is approximately 9 mm.

4. The automotive steering worm gear according to claim 1, characterized in that: A second connecting block (6) is fixedly connected to the right side of the second worm (7), and a second round block (5) is fixedly connected to the right side of the second connecting block (6).

5. A car steering worm gear according to claim 4, characterized in that: The length of the second connecting block (6) is approximately 5 mm, and the length of the second circular block (5) is approximately 8 mm.

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